function Person() {
    this.name = 'icoder'
    this.age = 19
    this.getAge = function() {
        return this.age
    }
}

const p1 = new Person()
const a = p1.getAge()

function Person() {
    this.name = 'icoder'
    this.age = 18
}
const p2 = new Person()
const b = p2.age